<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<div>
    <h1>修改商品页面</h1>
    <input type="text" v-model="product.id">
    <input type="text" v-model="product.title">
    <input type="text" v-model="product.price">
    <input type="text" v-model="product.num">
    <input type="button" value="修改商品" @click="update()">
</div>
<script src="https://cdn.bootcdn.net/ajax/libs/axios/0.21.1/axios.min.js"></script>
<script src="https://cdn.staticfile.org/vue/2.2.2/vue.min.js"></script>
<script>
    let v = new Vue({
        el: "body>div",
        data: {
            product:{
                id:"",title:"",price:"",num:""
            }
        },
        methods:{
           update(){
               axios.post("/update",v.product).then(function (response){
                   alert("修改完成");
                   location.href="/list.html";
               })
           }
        },
        created:function (){
            axios.get("/selectById"+location.search).then(function (response){
                v.product = response.data;
            })
        }
    })
</script>
</body>
</html>